Well the whole BI solution revolves around KPI's i.e Key Performance Indicators.
The BI itself is made for giving answers to questions which help us know, improve and compare our performance through period of time.
Suppose for Retail market, you have questions like, How much Sales happend last year..and What is current state of Sales, are we meeting the Targets(which means count of sales), Which Store is performing well as compared to others.
So these questions and their answers will become your KPI's for the application.
Please let us know, for which Domain(Finance, Retail etc) your application is for and then common KPI's can be shared from fellow members.
Hope this helps.
